US 12,442,367 B2
Long life pump tubing
James Ludlow, Medina, OH (US); Kathryn J. Morris, Tallmadge, OH (US); Mark F. Colton, Rootstown, OH (US); and Michael J. Tzivanis, Chicopee, MA (US)
Assigned to SAINT-GOBAIN PERFORMANCE PLASTICS CORPORATION, Malvern, PA (US)
Filed by SAINT-GOBAIN PERFORMANCE PLASTICS CORPORATION, Solon, OH (US)
Filed on Dec. 13, 2021, as Appl. No. 17/643,857.
Claims priority of provisional application 63/127,219, filed on Dec. 18, 2020.
Prior Publication US 2022/0196005 A1, Jun. 23, 2022
Int. Cl. F04B 43/00 (2006.01); B32B 1/08 (2006.01); F04B 43/12 (2006.01); F16L 11/08 (2006.01)
CPC F04B 43/0072 (2013.01) [F04B 43/1253 (2013.01); B32B 1/08 (2013.01); B32B 2597/00 (2013.01); F16L 11/086 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A tubing construction, comprising:
at least one layer formed from a thermoplastic vulcanizate (TPV),
wherein the tubing construction comprises a vertical rebound according to the Bashore rebound test under ASTM D2632-15 of not less than 50% and a tan delta of not greater than 0.10 as measured at 23 degrees Celsius and a frequency of 10 Hertz (Hz),
wherein the tubing construction comprises a Shore A Hardness of not less than 50A to not greater than 70A, a flowrate stability of not greater than +/−10% for a period of not less than 500 hours, a compression set of not greater than 26% at a temperature of not less than 150 degrees Fahrenheit for not less than 20 hours, or a crosslink density of not less than 0.005×10−3 mol/cm3 to not greater than 15×10−3 mol/cm3,
wherein the TPV comprises a crosslinked rubber and a thermoplastic resin.